摘要
辽西—冀东地区赋存于长城系上部和蓟县系下部碳酸盐岩中的层控金矿床为该区的一种具有良好找矿前景的新类型金矿床。该类型金矿床与卡林型金矿有若干相似之处 ,但又具有自己的独特特征 ,可称之为元古宙沉积岩型金矿床。太古宙结晶基底边缘或内部的元古宙拗拉谷、区域性同生断裂系统、中元古界富镁碳酸盐岩矿源层 ,以及中生代构造—岩浆活化作用是形成该类矿床的主要条件。元古宙为地球历史上最重要的金矿成矿期之一 ,以盛产沉积岩型、变质碎屑岩型和古砾岩型金矿为突出特征。
The gold deposits hosted by Middle Proterozoic carbonate rocks at Western Liaoning and Eastern Hebei are new type of strata bound gold deposits,they have great resources potentialities.The new type of gold ore deposits is similar to Carlin type gold deposits,but it has also self consistent features.This new type of gold deposits can be called the sedinents hosted gold deposits.During the evolutionory history of gold mineralization,Proterozoic Era is one of the most important periods,it is characterrized by the sedimentary rock type of gold deposits and the metamorphosed clastic rock type of gold deposits.
出处
《黄金科学技术》
2000年第1期8-16,共9页
Gold Science and Technology
关键词
沉积岩型金矿
中元古界
矿源层
金矿床
sediments hosted gold deposits
middle proterozoic
gold source bed
Western Liaoing
Eastern Hebei
